We have two air compressors in the Hackspace and a number of air-powered tools.
Direct Power Compressor
Generally lurks underneath the first bench in the workshop.
This is a modest unit, originally from Screwfix (possibly via Freecycle or eBay).
The native connections are Schraeder quick-lock. Following the demise of the original socket-end on the hose, a replacement hose has been fitted (many thanks to the local Machine Mart counter staff for helping with this) which allows tools with 1/4"BSP connections to be used as well.
(Details to follow)
Air Tools We Have
Gravity-feed Spray Gun
Touch-Up Spray Gun